Straightway valve



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Y J. M. COALE. S'IRAIGrH'I'WAYV VALVE. N0. 543,173.. Patented July 23,1895.

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@miran STATES PATENT Cartoni.

JOSEPH M. COALE, OF' BALTIMORE, MARYLAND.

STRAIG HTWAY VALVE.

SPECIFICATION forming part of Letters Patent No. 543,173, dated July 23,18e 5. Application filed March 23, 189.4. Serial No. 504,755.(No'model.)

-To all whom, it 'may concern:

erence being had to the accompanying drawings, forming a part of thisspecification.

My invention relates to straightway valves; and it has for its object orpurpose to provide a valve contained entirely within a casingA closed,except at'its inlet and outletports',

`and with mechanism operated by thespindle or stem in such manner thatVthe valve shall be raised from its seat without rotation by the initialmovement of the stem, and then by a continued movement thereof' thevalve will be opened to bring its ports in register with the inlet andoutlet ports of the casing. A valve having this purpose or object wasdescribed in prior patents granted to me, No. 511,510, datedDecember 26,1893, and No. 514,180, dated February 6, 1894; but my pres-y entinvention consists in a novel construction of the top Vof the shell orcasing and of the valve and the valve-spindle; also of the cam mechanismoperated by the vspindle of the valve and contained within the chamberformed by the annular rim of the casing and above -the valve, wherebythe valve is raised from its seat at the bottom of the casing by theinitial independent rotation of the spin- Y dle and then rotated by thesubsequent operation of the cam mechanism on the continued rotation ofthe spindle to-bring the valve-ports in'register with the inlet andVoutlet ports of the casing.

In the accompanying drawings, illustrating my invention, Figure 1 is avertical sectional view of the valve embodying the several fea'- turesof my present improvements and showing the valve raised from its seatand its ports in line with those of the casing. Fig. 2 is a lateralsectional view-through the line 1 2'of Fig.` 1, the valve beingV open asbefore. Fig. 3 is a like sectional view, but with the valve closed-thatis, with its ports not in line with those of the casing-but not screweddown on Fig. 4: is a like sectional View as Fig. 3, but with the valvefully screwed down onto its seat. Fig. 5 is a vertical sectional view onthe line 3 4 of Fig. 4. with'the valve v fully resting on its seat. Fig.6 isadetached elevation of the cam-piece.4 Fig. 7 Vis'anelevation of thevalve and of the collar formed on the headd or'end thereof. Figs. 8 and9 are elevations of the divided section of the cap formedoti the end'ofthe valve-spindle and surrounding the valve-head collar, and Fig.

10 is an elevation of the cam-operated'lockingbar that slides in thegroove on the head of V"the valve.

The shell or casing A is providedwith the usual inlet and outlet ports aa, adapted to register with the usual ports a. a' in the valve G, thecasing having a deep hollow base b, entirely closed vand preferablycylindrical on its interior, adapted to 'receive vand seat theA extendedcylindrical end b of the valve. The casing is provided on its top withan annular rim B constructed on its interior, as hereinafter described,and within` the hollow space formed by this rim the valve-actuatingmechanism hereinafter mentioned is located and operates on the stem orspindle thereof,-

A closingcap or journal C rests upon the annular rim B of the casingand' has a neck end screw-threaded on its exterior to receive screw-nutE and screw-threaded on its 1nterior to register with screw-threads onthe A is provided with an enlarged flat end forming an annularplate L,adapted to rest on the head of the valve, and is made in sections (seeFigs. 8 and 9) and recessed at m to tit the collar g of the valve, lthetwo sections of the stem being fastened by a screw passing through thehole e. The collar g will turn ICD freelyin-the recess m unlessrestrained.` It is apparent, therefore, that on the initial partialrotation of the valve-spindle H its screw threads acted upon by those onthe interior the stem is provided as follows:.A lockingbar K (see Fig.l0) is adapted to slide freely in the groove 7L of the valve, and it isprovided with a pin n, adapted to rest in the camgroove r of thecam-piece S, (see Fig. 6,) which is pivoted on the pin s', which entersthe hole s in the under or grooved side of the campiece S. Thecylindrical interior of the top of the casing formed by the annular rimB is provided with a rib T, forming a cam-race, terminating in a stop orprojection t on one end, and, in connection with another stop t',

located slightly distant from the end of the rib T to form a recess w toreceive therein the pin end'of the locking-bar K, thus limits themovement or arc of rotation of the locking-bar K, the cam-piece S beingpivoted between these stops tt and the pin n of the locking-bar Kpassing into the groove r of the cam-pece, as before mentioned, and isthus actuated thereby. Other stops t2 and t3 are provided, but are notessential for this purpose, their main function being to guide the valvevertically. This cam-piece S reciprocates in an arc of a circle on thepivot-pin s', its rounded exterior edge conforming; to the cylindricalform of` the shell and its interior edge being recessed in curved formand to give a projection s2, against which the cam-.lug may abut tocause it to so reciprocate. This lug is mounted on the valve-spindlejustabove the divided cap on the end thereof and above the head of thevalve. Its location relatively to the other parts is seen more clearlyin Figs. 2, 3, and 4.

By reference to Fig. 4 it will be observed that the fiat annular end Lof the valve-stem has a short cam-groove lo cut at a point on itsperiphery, into which the pin n of the locking-bar is adapted to passand enable the valve to berotated by the valve-stem.

The operation ot the device is as follows: In the normal position of theparts with the valve closed and resting on its seat, as shown in Figs. 4and 5, the spindle His given a turn to the left, and there being nothingthen (in this relation of its parts) to restrain or hinder /thebllar ofthe valve from freely rotating within the hollow cap on the end of thespindie the valve is necessarily raised from its seat Without rotationby the rise of the spindle within the screw-cap or journal C. Continuedrotation, however, of the spindle will bring the cam-lug m into registerwithin the curved inner edge of the cam-piece S, as shown in Fig. 3,which will then move in an arc of a circle on its pivot-bearing s, andthe groove r on the under face of this cam-piece (in which groove thepin n of the locking-bar is normally situated) will, on any furthermovement of the spindle, instantly force back the pin n of thelocking-barK and, guidingit through its short groove, deliver it at onceinto the cam-recess 7c on the peripheral edge of the cam-plate L of thevalve-spindle, (see Fig. 2,) the continued movement of which will rotatethe valve and bring its parts into full register with those of thecasing. A reverse movement .ot the spindle will bring'the parts againinto normal position and both close and reseat the valve.

Having thus described my invention, what I claim as new, and d-esire tosecure by Letters Patent, is-

1. In combination, forming a straight-way valve, the containing shell orcasing having an annular rim above its ports, a valve mounted in saidcasing having ports registering with those of the casing, a valvespindle, a cap or journal mounted on said casing, screw threads betweenthe journal and spindle, conneoting devices between the spindle and thevalve operating to raise the valve but permit of the rotation of thespindle independently of the valve and cam mechanism between the valveand spindle and the rim of the casing, consisting` essentially of ahorizontally arranged pinor bar adapted to be moved freely in atransverse groove in the head of the valve, devices upon theend of thevalve spinl dle adapted to contact therewith on a further rotation ofthe spindle, and an eccentrically pivoted cam piece actuated bythe'iinal rotan tion of the spindle and operating to lock the valvethereto and cause it to rotate there'- with; substantially as described.

2. The combination with the casing, having inlet and outlet ports, anextended hollow cylindrical base, and an annular rim above the ports; avalve having openings adapted to register with those of the casing, aclosing cap TOO or journal secured to the rim of the casing, a

valve spindle, screw threads between the journal and spindle, withconnecting devices between the spindle and the valve consisting of acollar on the head of the valve and a hollow cap on the end of thespindle adapted primarily to .raise the valve while permitting theindependent rotation of the spindle, and devices operating to lock thevalve to the spindle on the continued rotation of the latter, consistingof a loose horizontal lbar adapted toslide freely in a transverse groove.in the head of the valve, a pivoted cam adapted to actuate said barwhen brought into contact therewith, a lug upon the'end of theVvalvespindle adapted to actuate the pivoted cam, and a cam recess uponthe end of the valve spindle with which the end of t-he locking bar isarranged to register when actuated by the Gam; substantially asdescribed.

3. In combination, forming a straight-way valve, the shell or casinghaving an annular rim B provided on its interior with rib T, a pin smounted thereon, stop lugs t t constructed as described to form a recessw at one end of the rib, a cam-piece S mounted on said pin; a valveprovided with a transverse groove h, a locking bar K adapted to slide insaid groove and be actuated by the cam piece rgo S, a valve spindlehaving a projection or lug 'adapted to actuate the cam piece S andarecess belowthe same adapted to receive the lug of the locking bar,connecting devices between the valve and its spindle adapted to permitof the rotation ofthe spindle independently of the valve, a closing capor journal resting on the annular rim of the casing, and screw threadsbetween the spindle and journal primarily operating independently toraise the valve without rotation, and finally in connection with the cammechanism described to rotate the valve and bring its portsinto'register with those of the casing; substantially as described.

4. The combination, forming astraight-way valve, of the casing havinginlet and outlet ports and an annular rim above said ports forming achamber for `the valve actuating mechanism, a valve inounted on saidcasing and having ports adaptedV to register with those of the casin'gyaclosing cap or journal secured to the rimof the casing, a valve spindle, screw threads between the valve spindle and journal, a collar uponthe head of the arranged to form a recess w between the rib and the lug2',-and a cam piece S adapted to rotate above the said rib and having arecessed inner face and a groove on its under face; said parts beingconstructed, arranged and operating substantially as described.

In testimony'whereof I have hereunto af fixed my signature this 28th dayof February, A. D. 1894.

JOSEPH M. coALE.

Witnesses:

FRANK W. CoALE, Jos.' G. CoALE.

